accident statistics
事故统计学
热门单词
- automatic observatory
- automatic oil
- automatic observer
- automatic oil cock
- automatic one speed control
- automatic oil cup
- automatic oiler
- automatic oil pressure gauge
- automatic on-board optical system
- automatic oiling
- automatic open loop control
- automatic onload tap changer
- automatic operation system
- automatic opening
- automatic operation
- automatic ordering system
- automatic overload control (AOC)
- automatic oscillograph
- automatic oxygen generator
- automatic oxygen cutting
- automatic oxygen respirator
